Indicating mechanism for strong boxes and safes



Aug. 21, 1923.-

K. MAMIYA INDICATING MECHANISM FOR STRONG BOXES AND SAFES Filed May 8, 1919 2 Sheets-Sheet 1 26 IE: I ;VIIIII A.

Aug. 21, 1923'.

K. MAMIYA INDICATING MECHANISM FOR STRONG BOXES AND SAFES Filed May 8, 1919 2 Sheets-Sheet 2 'iulllmlllllllllllllpn Patented Aug. 21 1923;

n; UNITED STATES 1,465,362 P AT iENT oFFiCE.

' KATSUSABURO MAMIYA, oronrro,

- iNnIcA'rINe Mec anism. FOR STRONG BOXES Ann sArEs.

Application filed flay 8,

T 0 all whom it may concern:

Be it known that I, KATSUSABURO MAMIYA,

a subjectof the-Emperor of Japan, and a resident of Ohito, Tanakaniure, Tagata-gun,

, Shizuolea-ken, Japan, have invented new and It is a well-known fact that quite anumber of thefts have occurred where it woul'dhave i been possible to apprehend the thief if the i guardianof the strong box orsafe would have been able to have ascertained, immedr ately upon an investigationof the strong box or safe, that the same had been opened during his absence. It is often thecase that theftis not detected until a-great deal of time has elapsed when certain-valuables may be looked forwithout [being found, which is the only indication that this has occurred.

Having described the object of my invention, I desireto direct attention to the draw ings in which Figure 1 represents a plan view of my im proved strong box or safe with an indicating mechanism attached.

Fig. 2 is a sectional front elevation of the cover and the devices mounted therein.

' lever 20, and its connections.

sectional front elevation, but with the cover i is provided which short arm 24 is adapted to bear against the face of the sleeve 17 and. upon the lowering thereof, to ride inwardly of construction. V I Figure 6 1s a front elevation of thesame.

Figure?) is a ore detailed view, also in closed. r i A Figure 4: is a sectional side elevation with the cover closed. V 7 V V Figure 5 is a detail plan view of the indicating mechanism, as well as other details Fig. 6 is a detail planof the same. Figure 7 illustrates a detail of construction associated witha lock to prevent, tam

poring with the indicating mechanism.

Fig. 7 is a simila-r'viewat right angles toFig.7. I i

Fig. 7 is an end elevation of the same. In these views like reference characters indicate like parts, theinumeral l designat 7 ing the'bodyproperof the safe or strong ,mea s of the ratchet .6.

1919. s rieim. 295,645.

box, and 2the lid or door thereof. The door isadapted to provide a space 3'in which are provided'spindles 4: and 4' mounting the discs 5 and 5 which are actuated by the ratchet lwheels 6 and 6. Extending downwardly fromthe lower face of the dial disc 7 whereby, upon one complete revolution having been performedby the dial 5, the dial 5": will bemoved forward one notchin the conventional manner. I r A spring 9, convenlently attached to lid 2 engages with its end the ratchets 6 and j 6'. to preventany promotion of the dials 5 and 5. A pawl 11 engages the ratchet 6 by virtue of the spring 12 bearing againstsaid pawl. Projecting rearwardly from theend of said'pawl is a rod 13 mounted in guides 1 1 and 14, a'spring28 being positioned between such guides and normally tending to draw the rod 13 and consequently the pawl 11 "rearwardly so as to revolve Provided in the upper face-of the door or lid 2 is a window 15 through which the dials 5 and 5 may be observed; I

The lid 2 is further provided with looking posts 16, 16'.and 167, the post 16 being encircled by a sleeve 17, includinga beveled portion 18. Interposed between the upper portion ofthe sleeve 17 and the upper end the dial 5 by of'the rod 16 is a spring 19 adapted to exert downward pressure upon the sleeve 17.

As seen most clearly in Figure 5, a lever 20 pivoted at 22 and having a short arm 24,

towardthe rod 16 along the inclined face 18 ofthe sleeve,.the spring 23 being provided to insure this motion.

Anopening 21 is provided in the lower floor of the space 8. which opening is adapted to receive the upper end of a 'rod' 25 mounted in the main part of the safe 1 as shown as at 26 to the lower floor of the space3 and is adapted to be engaged by the upper end of the lever 25, which lever 25 is acted upon best in Figure 4. A bell crank lever, including the arms 27 and 27 is fulcrumed by a spring 35 which normally tends to pull 7 the same downwardly.

Secured to a rod 31 are uprights 29, 29 and 29 terminating in hook-shaped ends 80, 30 and 30", which are adapted to e11- ga-ge the lower end of the rod 16, 16' and 16 respectively.

A lever, including arms 33 and 86 fulcrumed as at 32 and the arm 36 is provided with an elongated slot 37 which is adapted to engage a pin 34 secured to the rod In operation it will be seen that the cover being closed the rods 16, 16 and 10 will become engaged by the ends 30, 30 and 30 of the uprights' Simultaneously, the lo ver face 01 the sleeve 17 will be caused, by virtue of its engagement with the body portion 1 of the safe, to ride upwardly on the rod 16, thus pushing the end 24: of the lever 20 inwardly and the end 20 thereof outwardly. It will be noted that the end 20 normally covers the opening 21, i. 0., when the cover is opened, but when the cover is being closed, the aforementioned action will take place, resulting in the opening 21 being cleared by the'end 20 of the lever.

Simultaneously with the aforementioned operation, the end of the rod 16 will. engage the end 33 of the lever fulcrumed at 32, causing the upper end of such lever to move upwardly, which by reason of the connection 37 and 34, moves the rod 25 upwardly against the action of the spring 35. The upper end of the rod 25 will bear against the lower face of the arm 27 of the bell crank fulcrumed at 26, causing the second arm 27 to move inwardly against the end of the rod 18 against the action of the spring 28, causing the pawl 11 to engage the ratchet 6 one notch further up.

Upon opening the lid or cover of the safe, it will be seen that the sleeve 17, by reason of the compression of the spring 19, will move downwardly, allowing the arm 24 of the lever fulcrumed at 22, to ride inwardly along the inclined surface 18 of said sleeve resulting in the swinging of the opposite end 20 of said lever so as to cover the opening 21, to effectively prevent any tampering with the indicating mechanism.

Simultaneously with the aforementioned action, the rod 16 will release the arm of the lever 'Eulcrumed at 32 permitting such arm to move upwardly, the opposite arm 36 moving downwardly and carrying with it the rod 25 by virtue of the action of the spring 35. This movement results in the with drawal of the upper end of the rod 25 from the space 3, thus permitting the arm 27 of: the bell crank pivoted at 26 to move downwardly and also swinging the arm 27 of such bell crank rearwardly, thus permitting the rod 13 to move under influence of the spring 28 whereby to pull the pawl 11 and move the'indicating mechanism one notch.

From the foregoing it will be seen that I have constructed a mechanism such. as described in the preamble, which will immediately indicate every opening of the lid or door of the safe or strong box, at the same time providing a mechanism which will effectively prevent any tampering with the indicating mechanism to detect such open in l-Iaving described my invention, what I claim is Y 1. A safe having a door, indicating mechanism mounted on the door, operating means for said indicating mechanism also mounted on the door and an element arranged in the body of the safe and effective on the closing of the door to coact with said operating means to render them operative, and means to prevent the indicating mechanism from being operated when the door is open.

2. A safe having a door, indicating mechanism mounted on the door and including on the inner side of the door a casing element having an opening, operating means for said indicating mechanism including an element arranged in the body of the safe, to enter said opening when the door is closed and thereby enable the indicating mechanism to be operated, and automatically operating means to close Said opening and thereby prevent the indicating mechanism from being operated when the door is open.

In witness whereof I aliix my signature.

KATSUSABURO MAMI'YA. 

